Sumatran Orangutan
It has taken a short, three-quarter century for this population to decline by 80 percent. Now on the critically endangered list as well for deforestation and poaching, this old man of the forest is unlikely to be seen by those who live to the middle of the 21st century.
Sumatran Elephant
The population of the Sumatran elephant stood at a small 2000 animals just a decade ago. In the last 25 years, a full 70 percent of its natural habitat has been destroyed to make way for commercial farms. Constant commercialization also now finds this species on the list of critically endangered animals.